The number of limited partners who received common stock in exchange for an equal number of units, in the period.

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- Definition

Period of extension of existing period during which shares may be purchased under the stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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-Publisher FASB
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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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- Definition

Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).

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- Definition

Total change in each class of partners' capital accounts during the year due to redemptions and adjustments to redemption value. All partners include general, limited and preferred partners.

+ References

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- Definition

The number of units redeemed during the year of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

+ References

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- Definition

The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity - Shares or Units Activity (Details) $ / shares in Units, $ in Millions				3 Months Ended							9 Months Ended
	Feb. 11, 2019 USD ($)	Sep. 25, 2018 shares	Feb. 13, 2017 USD ($)	Dec. 31, 2019 $ / shares	Sep. 30, 2019 $ / shares shares	Jun. 30, 2019 shares	Mar. 31, 2019 shares	Sep. 30, 2018 $ / shares shares	Jun. 30, 2018 shares	Mar. 31, 2018 shares	Sep. 30, 2019 USD ($) item $ / shares shares	Sep. 30, 2018 $ / shares shares
Equity
Redemption of units					27,214		774		8,716	40,503
Exchange of limited partner units, (in shares)							24,000	86,732		6,000
Shares repurchased (in shares)					1,154,117	1,046,580	46,377		514,659	1,473,588	2,247,074
Average share price repurchased (in dollars per share) \| $ / shares											$ 160.11
Common stock dividends paid (in dollars per share) \| $ / shares					$ 2.10			$ 2.00			$ 6.20	$ 5.90
Dividends declared per common share (in dollars per share) \| $ / shares				$ 2.10
Limited Partners
Equity
Exchange of limited partner units, (in shares)											24,000
2017 Share Repurchase Program
Equity
Stock repurchase program, extension period			2 years
Common stock authorized for repurchase \| $			$ 2,000.0
Shares repurchased (in shares)											46,377	1,988,247
Average share price repurchased (in dollars per share) \| $ / shares											$ 164.49	$ 154.56
2019 Share Repurchase Program
Equity
Stock repurchase program, extension period	2 years
Common stock authorized for repurchase \| $	$ 2,000.0
Simon Property Group, L.P.
Equity
Redemption of units					27,214		774		8,716	40,503
Distributions paid per unit (in dollars per share) \| $ / shares					$ 2.10			$ 2.00			$ 6.20	$ 5.90
Simon Property Group, L.P. \| Limited Partners
Equity
Redemption of units											27,988
Number of limited partners who received common stock \| item											6
Value of units redeemed \| $											$ 4.3
Outlets at Orange
Equity
Ownership interests acquired (as a percent)		50.00%
Outlets at Orange \| Simon Property Group, L.P.
Equity
Number of units issued in connection with acquisition of the remaining interest in orange outlet		475,183